In terms of habitat modification, which practice is encouraged to establish compatible plant species?

Planting grass is an encouraged practice for establishing compatible plant species as it contributes to habitat modification in several beneficial ways. Grass can help stabilize the soil, reduce erosion, and provide a competitive environment that supports the growth of specific native plants. Additionally, the establishment of grass can create a more diverse ecosystem by attracting various forms of wildlife, aiding in the overall functional balance of the habitat.

In contrast, the other options may not directly contribute to establishing compatible plant species as effectively. Pesticide application can harm beneficial organisms and disrupt the ecological balance. Mechanical clearing may lead to habitat destruction and might not favor the establishment of desired plant species. Soil alteration, unless precisely managed and the correct amendments are applied, might prove counterproductive, as it could be detrimental to the existing ecosystem and make it challenging for compatible plants to thrive. Thus, planting grass stands out as a practice that aligns well with the goals of habitat modification and the promotion of compatible plant species.